Download Consulta: subjectFacets:"Trachea" Registros recuperados: 10 Data

Consulta: subjectFacets:"Trachea"
Registros recuperados: 10
Data/hora: 09/06/2017 11:37:56
Histology of the trachea and lung of Siphonops annulatus (Amphibia, Gymnophiona)
Provedor de dados: 57
Autores: KUEHNE,B.; JUNQUEIRA,L. C. U.
The structure of the trachea and lung of Siphonops annulatus was studied in ten specimens of routinely fed animals. The trachea is
constituted mainly by incomplete cartilage rings lined by a respiratory epithelium (ciliated and mucous cells) with variable
morphology according to the region observed. A rich vascularization of this organ suggests its participation in blood-air gas
exchange. The right lung in this species is developed and the left one is atrophied. This organ is constituted mainly by longitudinal
septa formed by connective tissue, smooth muscle cells and blood capillaries. These structures are covered by pneumocytes of one
type only, which present cytoplasmic particles that have been related with surfactant activity described in the lung of...
Tipo: Journal article
Palavras-chave: Gymnophiona; Siphonops; Trachea; Lung; Structure.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71082000000100019
The mechanism of gentisic acid-induced relaxation of the guinea pig isolated trachea: the role of
potassium channels and vasoactive intestinal peptide receptors
Provedor de dados: 56
Autores: Cunha,J.F.; Campestrini,F.D.; Calixto,J.B.; Scremin,A.; Paulino,N.
We examined some of the mechanisms by which the aspirin metabolite and the naturally occurring metabolite gentisic acid
induced relaxation of the guinea pig trachea in vitro. In preparations with or without epithelium and contracted by histamine,
gentisic acid caused concentration-dependent and reproducible relaxation, with mean EC50 values of 18 µM and Emax of 100%
(N = 10) or 20 µM and Emax of 92% (N = 10), respectively. The relaxation caused by gentisic acid was of slow onset in
comparison to that caused by norepinephrine, theophylline or vasoactive intestinal peptide (VIP). The relative rank order of
potency was: salbutamol 7.9 > VIP 7.0 > gentisic acid 4.7 > theophylline 3.7. Gentisic acid-induced relaxation was
markedly reduced (24 ± 7.0, 43...
Tipo: Journal article
Palavras-chave: Gentisic acid; Potassium channels; Vasoactive intestinal peptide; VIP; Trachea; Smooth muscle.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2001000300013
Heterotopic transplantation of glycerin-preserved trachea: effect of respiratory epithelium
desquamation on acute rejection
Provedor de dados: 56
Autores: Saueressig,M.G.; Edelweiss,M.I.A.; Souza,F.H.; Moreschi,A.H.; Savegnago,F.L.; Macedo Neto,A.V.
An effective preservation method and decreased rejection are essential for tracheal transplantation in the reconstruction of large
airway defects. Our objective in the present study was to evaluate the antigenic properties of glycerin-preserved tracheal
segments. Sixty-one tracheal segments (2.4 to 3.1 cm) were divided into three groups: autograft (N = 21), fresh allograft (N = 18)
and glycerin-preserved allograft (N = 22). Two segments from different groups were implanted into the greater omentum of dogs
(N = 31). After 28 days, the segments were harvested and analyzed for mononuclear infiltration score and for the presence of
respiratory epithelium. The fresh allograft group presented the highest score for mononuclear infiltration (1.78 ± 0.43, P <=...
Tipo: Journal article
Palavras-chave: Graft rejection; Trachea; Transplantation; Glycerol; Respiratory mucosa.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2005000700010
Quantitative Anatomy of the Trachea of the Giraffe (Giraffa camelopardalis rothschildi)
Provedor de dados: 77
Autores: Cano,Ivana; Pérez,William.
We described the macroscopic and quantitative anatomy of the trachea of the Giraffe (Giraffa camelopardalis rothschildi). The
trachea of one juvenile male giraffe (25 months of age) weighing 754 kg was used in this study. The length of the neck was 125
cm. The trachea had 107 cm in length on its cervical part and 18 cm on its thoracic part. The total number of cartilage was 87.74
at the neck and 13 at the thorax. The general shape of the duct was mostly circular. The separation of the dorsal ends of the
tracheal cartilages was pronounced in the first half of the cervical trachea, reducing caudally and overlapping in the thoracic
trachea. In the caudal part the trachea had a tracheal bronchus for the cranial lobe of the right lung and the end of the trachea...
Tipo: Journal article
Palavras-chave: Anatomy; Respiratory aparatus; Trachea; Wild animal; Quantitative study.
Ano: 2009
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022009000300042
Structure and Concentration of Elastic System Fibers in the Trachea of the Rat
Provedor de dados: 77
Autores: Andrade,Filipe Moreira de; Judice,Luiz Felippe; Cisne,Rafael; Félix,Bruno; Mourad,Omar Moté Abou;
Cardoso,Gilberto Perez; Babinski,Marcio Antonio.
The extracellular matrix is a key element in the tracheal morphology and physiology, both in normal and pathological states, yet
little is known regarding its composition and organization. Herein we carried out a detailed study of the morphological
organization and volumetric density of elastic system fibers in the trachea of Wistar rats. Six Wistar rats at the age of 45 days were
used. The trachea was excised following anesthesia with Thiopental and perfusion through the left ventricle with buffered saline
followed by formalin solution. Samples were fixed in formaline, embedded in paraffin, and histologically processed. The elastic
system fibers were evaluated at light microscopy by using Weigert's resorcin-fuchsin technique after oxidation with oxone....
Tipo: Journal article
Palavras-chave: Rat; Trachea; Morphology; Elastic fibers; Quantitative evaluation.
Ano: 2011
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022011000100002
Anatomy and morphometric aspects of the trachea of Saimiri sciureus Linnaeus, 1758: knowledge for
emergency procedures
Provedor de dados: 42
Autores: Pinheiro,Luane L.; Lima,Ana R.; Muniz,José A.P.C.; Imbeloni,Aline; Fioreto,Emerson T.; Fontes,Rodrigo F.;
Cabral,Rosa; Branco,Érika.
The aim of this work is to study the morphological characteristics of the trachea of Saimiri sciureus through quantification and
measurement of the cartilaginous rings, providing information to facilitate the election of more appropriate endotracheal tube,
laryngeal mask or tracheostomy tube for anesthetic and emergency procedures, as it is a species of Neotropical primates most
commonly used as biological models, and little is known about their morphology. Nine animals were investigated, being 4 adults
and 5 young acquired from the Centro Nacional de Primatas (National Primate Center - CENP) - Ananindeua - PA, which died
from natural causes and then fixed in aqueous buffered formalin 10%. Saimiri sciureus trachea comprises an average of 32.8
incomplete...
Tipo: Journal article
Palavras-chave: Emergency procedure; Morphology; Respiratory system; Saimiri sciureus; Trachea.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652012000400012
Relaxant effects of different fractions from Tymus vulgaris on guinea-pig tracheal chains
Provedor de dados: 48
Autores: Keyhanmanesh,Rana; Boskabady,Mohammad H.
In previous studies, the relaxant effect of Tymus vulgaris has been demonstrated on guinea pig tracheal chains. Therefore, in the
present study, the relaxant effects of n-hexane, dichloromethane, methanol and aqueous fractions of Tymus vulgaris on tracheal
chains of guinea pigs were examined. The relaxant effects of four cumulative concentrations of each fraction (0.4, 0.8, 1.2 and 1.6
g%) in comparison to saline as negative control and four cumulative concentrations of theophylline (0.2, 0.4, 0.6 and 0.8 mM)
were examined for their relaxant effects on precontracted tracheal chains of guinea pig by 60 mM KCl (group 1) and 10 ìÌ
methacholine (group 2, n = 7 for each group). In group 1, all concentrations of the n-hexane fraction and theophylline and three...
Tipo: Journal article
Palavras-chave: Tymus vulgaris; Fractions; Relaxant effects; Guinea pig; Trachea.
Ano: 2012
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602012000100009
Arabian Oryx (Oryx leucoryx) Trachea: a Descriptive and Morphometric Analysis
Provedor de dados: 77
Autores: Al-Zhgoul,Mohammad Borhan; Dalab,Abdul Hafeed S; Abdulhakeem,ElJarah; Ismail,Zuhair Bani; Thanain,Al
Thanain.
The objective of this study was to report the distinctive anatomical and histological features of the trachea of the Arabian Oryx
(Oryx leucoryx). The number of tracheal rings and tracheal length were measured. The diameter, thickness and cross sectional
area of tracheal ring were determined at four tracheal regions (cranial cervical (CCR), middle cervical, thoracic inlets and intra
thoracic). Tracheal rings were also collected for histological analysis. The mean length of the trachea was 54.1cm ± 0.73, while
the number of tracheal rings varied from 50-51. Tracheal ring measurements (diameter, thickness and cross sectional area) were
smallest at the thoracic inlet region. The ratio of the outer transverse to outer vertical and inner transverse to inner...
Tipo: Journal article
Palavras-chave: Oryx leucoryx; Trachea; Descriptive analysis; Morphometric analysis.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022013000300005
Occurrence of infectious Laryngotracheitis Virus (ILTV) in 2009-2013 in the State of São Paulo Brazil
Provedor de dados: 89
Autores: Parra,SHS; Nuñez,LFN; Astolfi-Ferreira,CS; Ferreira,JP.
Infectious laryngotracheitis is a very important respiratory disease because it causes significant economic losses in the poultry
industry. The target of ILTV infections is the respiratory system, and the main organ in which the virus remains latent is the
trigeminal ganglia. However, the virus has demonstrated tropism for other organs as well. The present study was conducted to
determine the presence of Infectious Laryngotracheitis Virus (ILTV) in the state of São Paulo. Samples submitted to
LABOR- USP during the last four years (2009-2013) analyzed by a nested/PCR technique. Out of the 682 samples from layers
tested for LTIV, 12.46 % were positive, and derived from in both traditional (trachea and trigeminal ganglion) and untraditional
(cecal...
Tipo: Journal article
Palavras-chave: Infectious Laryngotracheitis; PCR; Detection; Trachea; Trigeminal.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000100117
Tracheal Length in Adult Human: The Results of 100 Autopsies
Provedor de dados: 77
Autores: Cinar,Ugur; Halezeroglu,Semih; Okur,Erdal; Inanici,Mehmet Akif; Kayaoglu,Semra.
The purpose of this study was to investigate the average tracheal length and number of the tracheal cartilages in Turkish people,
with emphasis on the relationships to body height and sex. A hundred fresh human cadaver tracheas were harvested from 75 males
and 25 females. Age, sex and body height of cadavers were recorded. All the neck and intrathoracic structures were removed. The
tracheal length was measured between the subcricoid level to the carina in resting and maximally stretched positions. Average
tracheal length and number of the tracheal cartilages were compared in different body height groups in both sexes. We found that
average body height was 160±6.4 cm and average tracheal length in resting position was 8.5±1 cm (range 6.5-11 cm) in females...
Tipo: Journal article
Palavras-chave: Trachea; Tracheal length; Body height; Anatomy; Cadaver.
Ano: 2016
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022016000100033